Nanao, a housewife who lives while taking care of her husband and father-in-law. Recently, her father-in-law's dementia has become so severe that she mistakes herself for her late wife. rice field. However, the kindness of her Nanao becomes her enemy, and one day her father-in-law relentlessly demands her Nanao's body! Because Nanao understands her father-in-law's feelings, and also helps her own frustration, she has a relationship with her father-in-law. The act of Nanao and her father-in-law, who is not dealt with by her husband, escalates, and the two violently fiddle with each other's bodies, immersing themselves in rich sex like a couple.
